Não informado. Pipeline underground utilities construction. Oildom Publishing.
Chicago-Zitierstil (17. Ausg.)Não informado. Pipeline Underground Utilities Construction. Houston, Tex: Oildom Publishing.
MLA-Zitierstil (8. Ausg.)Não informado. Pipeline Underground Utilities Construction. Oildom Publishing.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.